Home / Cost Guides

Building Cost Guides 2026

Transparent, up-to-date pricing guides to help you budget for your building project. All costs include materials and labour.

£1,500–£2,500/m²

House Extension Cost

How much does a house extension cost in 2026? Complete pricing guide covering single-storey, double-storey, side, rear, and wraparound extensions. Includes planning, materials, and labour breakdowns.

Read full guide →
£30,000–£60,000

Loft Conversion Cost

Dormer, Velux, hip-to-gable, and mansard loft conversion costs compared. Learn which type suits your property and budget, plus hidden costs to watch for.

Read full guide →
£10,000–£20,000

Garage Conversion Cost

Single and double garage conversion costs broken down. Including insulation, flooring, electrics, plumbing, and finishing. One of the most cost-effective ways to add living space.

Read full guide →
£25,000–£60,000

Kitchen Extension Cost

Side return, rear, and wraparound kitchen extension pricing. Includes structural work, utilities, fitting, and finishing. The most popular home improvement project in the UK.

Read full guide →
£200–£350/day

Builder Day Rates

What do builders charge per day in 2026? Regional rates across the UK, plus rates for specialists: plumbers, electricians, plasterers, roofers, and bricklayers.

Read full guide →
£3,000–£12,000

Bathroom Renovation Cost

Full bathroom refit costs including plumbing, tiling, fixtures, and labour. Budget, mid-range, and luxury options compared for 2026.

Read full guide →
£1,800–£3,000/m²

New Build Cost

How much does it cost to build a house from scratch? Full guide covering foundations, structure, roofing, utilities, and finishing for self-build projects.

Read full guide →
£500–£1,500/m²

Renovation Cost

Full home renovation costs by room and project scope. From cosmetic refreshes to complete gut renovations — budget accordingly.

Read full guide →
£5,000–£25,000

Accessible Bathrooms Cost

Steel beams, underpinning, load-bearing wall removal, and foundation work. Structural engineering costs explained for homeowners.

Read full guide →
£3,000–£15,000

Shower Installation & Enclosures Cost

New roofs, re-roofing, flat roof conversions, and repairs. Costs by roof type, material, and property size across the UK.

Read full guide →
£2,000–£15,000

Bathroom Tiling Cost

Foundations, drainage, site preparation, driveways, and landscaping costs. Essential groundwork pricing for extensions and new builds.

Read full guide →
£206–£462+

Planning Permission Cost

Planning application fees, architect drawings, and the full cost of getting planning approval in 2026. Including permitted development rules.

Read full guide →
£400–£1,200

Building Regulations Cost

Building control fees, structural calculations, and compliance costs. What you need for sign-off on extensions, conversions, and renovations.

Read full guide →
£1,200–£3,500/m²

Luxury Bathrooms Cost

Office fit-outs, retail space construction, and commercial development costs. Build-out pricing per square metre for UK businesses.

Read full guide →
£800–£2,500/m²

Bathroom Renovation Cost

Period property restoration, listed building work, and heritage repairs. Specialist restoration costs and what to expect from the process.

Read full guide →

Common Questions

Details regarding our process, planning constraints, and project timelines.

Many single-storey extensions and loft conversions fall under Permitted Development rights. However, larger extensions, properties in conservation areas, or flats will require full planning permission. We assist with architectural drawings and planning applications as part of our comprehensive service.
A standard single-storey rear extension typically takes 10-14 weeks from breaking ground to final handover. Complex double-storey extensions or projects requiring significant structural steelwork may take 16-24 weeks. We provide a detailed timeline prior to contract signing.
Yes. We carry comprehensive public liability and employer's liability insurance. All structural work is guaranteed, and we work alongside independent Building Control inspectors to ensure all work meets or exceeds UK Building Regulations.
We use a transparent, staged payment structure. Payments are tied to specific, verifiable project milestones (e.g., groundworks complete, steel installed, watertight). You only pay for work that has been completed and signed off.

Request a Consultation

Tell us about your project requirements to initiate a detailed estimation process.

Your details are secure. We typically respond within 1 working day.

Ready to transform your property?

Partner with Online Bathrooms for structural excellence and refined finishes.

Start Your Project